O&R trimmer

[Gravely 0]

Here is my latest find I am going to try to get these working. One has the early style engine the other 3 have a later type. Can someone help id the engine models? 

[Wallfish 687]

All appear to be Little Wonder trimmers. ( Or at minimum the same thing because many O&R tools were simply branded different. )

The later type engines are 13B

Scroll through this for info concerning the different engines

 

[Gravely 0]

Thanks